Publishers offering "Podcast Episode Sponsorship" spots

A podcast episode sponsorship puts your brand in the sponsor slot of a single episode. Listeners hear your name at the start, and sometimes a short message and a mention in the show notes.

How it's sold: iHeartMedia, MacRumors and NRC sell it, with spots like a sponsor name read at the start of an episode or a featured sponsor segment. You book through the publisher's sales team.
What it costs: Most publishers quote this on request, and the usual basis is a flat fee per episode.
What you supply: You supply a logo for the show notes, a short script and a link or promo code.
Best for: It suits you if you want your brand tied to one topic or a launch week.
Before you buy: Check the typical downloads of past episodes, since one episode can vary a lot.